title: Transport of vitamin D: significance of free and total concentrations of the vitamin D metabolites.
mesh_terms: D000818:Animals; D001692:Biological Transport; D002117:Calcitriol / Q000378:metabolism; D002118:Calcium / Q000378:metabolism; D002352:Carrier Proteins / Q000378:metabolism*; D005246:Feedback; D005260:Female; D005333:Fetus; D006801:Humans; D007408:Intestinal Absorption; D011247:Pregnancy; D014807:Vitamin D / Q000378:metabolism*; D014809:Vitamin D-Binding Protein
chemical_list: D002352:Carrier Proteins; D014809:Vitamin D-Binding Protein; D014807:Vitamin D; D002117:Calcitriol; D002118:Calcium